A famously warm material, wool is a common choice for cold weather clothes, especially winter socks. Wool naturally traps in body heat with ease, better than most other materials, making it an easy choice. The famously itchy nature of standard wool can put people off of wearing it, however. Thanks to the super soft merino wool in the Wool Socks, you can take advantage of the warmth offered by wool without any of the itchiness. The Wool Socks are made of 80 percent merino wool that is super soft against the skin and won't cause itchiness or other irritation. This material is also naturally capable of regulating body temperature; even though it locks in heat, it won't make you feel too hot or overheated. The socks also work to keep your feet nice and dry thanks to two properties: moisture-wicking fibers and ventilation channels. The ventilation channels promote airflow throughout the sock to keep you cool, while moisture-wicking fibers absorb sweat and eliminate foot odor. Along the bottom of the Wool Socks is a full cushion footbed that offers padding from end to end. Each pair of socks is designed to carry you through your day without feeling damp or hot and while still feeling well supported. Thanks to the inclusion of reinforced yarn, the heel and toe are both resistant to tears, holes or other such damage, ensuring they last a long time. The Wool Socks are manufactured using a blend of 80 percent wool, 15 percent polyester, four percent nylon and one percent spandex. They provide a great mix of warmth, strength and stretch. They are available in two sizes: small-medium and medium-large. Small-medium fits men's shoe sizes 5 to 9.5 and women's shoe sizes 6 to 10.5. Medium large fits men's shoe sizes 9.5 to 14 and women's 11 to 15.